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Pointers for Insect Control in Garden Vegetables Dr. Ayanava Majumdar Ext. Entomologist, State SARE Coordinator Tel: (251) 331-8416 email@example.com
Start with a Clean Garden Remove plant debris Bring weeds under control quickly Choose vigorous hybrids Choose good crop rotation (especially think disease carryover)
Insect monitoring with traps Pheromone traps are sold as kits by many companies (Planet Natural, Arbico Organics) and effective in detecting low insect populations. Shown here are two low-cost wing traps that can be used for monitoring corn earworm & tobacco budworm in the backyard.
ACES Insect monitoring project (started in 2009)
What does trap catch tell you?
Catch = Density x Activity
Commercial traps/lures were used
Advantages of IPM traps: Specificity, Sensitivity, Simplicity, Safety
Sites monitored for pest insects in 2009 commercial crops are marked with a star >>
Trap catches in 2009 Insect catches (June-Oct.): Total = 8,586 Lesser cornstalk borer = 3,586 Fall armyworm = 1,386 Beet armyworm = 1,377 Corn earworm = 589 Southern armyworm = 393 Tobacco budworm = 342 Soybean looper = 230 Cabbage looper = 223 Corn rootworm: Southern = 253; Western = 13 Black cutworm = 125 Diamondback moth = 65 Tomato pinworm = 4 European corn borer = 0 Stink bugs = 0 (trap/lure problem) Expect these insects in your backyard too
Insect monitoring with pit-fall traps Estimate insect activity on soil surface. Insects follow the guide sticks and drop into the trap (a ½ cup of water). Guide stick
Light trapping insects: The quick & easy way Water-filled bowl under porch light can be a simple light trap in summer. Add some dish detergent to the water to drown moths and beetles that will be attracted to the light. During rain, remember to remove the container. Keep records of your collection.
IF you do insect trapping… Maintain a record of start and finish each year Record number of insects in trap each week Draw chart of insect numbers and note the peak flight period (see next slide for example) Scout your main crop for larvae/crop damage Correlate the insect number in trap to actual crop damage Do these steps in multiple years and you will become a true entomologist! Be able to predict a pest outbreak using population data
Example of insect monitoring using pheromone trap: Corn earworm/tomato fruitworm Population density in Mobile & Baldwin Co. Monthly average activity Arrows (above) indicate peak activity periods. 16 11 Year 2009
Try different IPM tactics Deep tillage, soil solarization…can expose and kill insects. Trap crops (squash, sunflower) for sucking pests + contact poison Trap crop (squash) Main crop Main crop Main crop (watermelon, cantaloupe, cucumber) Trap
Try different IPM tactics Physical barriers to insects:
Reflective mulch (white, silvery)…when plants are small
Row covers for insect control (light weight material)
Insect nets from fine cotton material (sold in Walmart)
Bifenthrin (AI) granules: can be applied once when preparing soil or after planting (mix well in soil). Bifenthrin spray or RTU can be applied multiple times 7 days apart. Try rotatin Sevin or BugBGon with alternative insecticides.